William and Kate reside in Apartment 1A, a 20-room, four story mansion that overlooks Hyde Park.
In a photograph released of Barack and Michelle Obama visiting William and Kate at their home, the inside of Apartment IA appears cosy.
The former President and his wife were photographed sitting on cream sofas with the Royals, including Prince Harry.
The room is bright, with several lamps scattered around, and the sofas boast floral patterned cushions.
Despite being a royal residence, the room is very lived in, with touches such as framed photographs, flowers and books creating a homely feel.